Pump for vacuum-cleaners.



I H. H, TAYLOR & L. A. MOBEHRY.

' PUMP FOR VACUUM CLEANERS. Y APPLICATION FILED JULY 15. I9l6- RENEWED FEB- 6.1 9!!!- Pmtented Apr. 2, 1918'.

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H. H. TAYLOR & L. A. MOBERRY.

PUMP FOR VACUUM CLEANERS.

APPLICAIION FILED JULY 15. I916. RENEWED FEB. 6. I918.

Patented Apr. 2, 1918.

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fi my/V HORACE TAYLOR AND LEQNABD A. H' IOBERBY, OF OAKLAND, CALIFORNIA.

Application filed July 15, 1916, serial No, 109,529. RenewedEebruary To all whom it may concern:

Be i known that we, Honncn H. TAYLOR and LEONARD A. Monmrnv, citizens of the United States, residing at Oakland, in the county of Alameda and State of California, have invented new and useful Improvements in Pumps for VacuunrOleaners, of which the following is a specification.

The present invention relates to improvements in pumps for vacuum cleaners.

The object of the invention is to provide a vacuum cleaner of great power in propor tion to its size, which will clean curtains, walls or clothing while stationary on the floor, will sweep the floor while moving thereover, and will be simple and durable in construction and lightin weight.

I h a p nying ra ing, Fig 1 is a side view of the machine; Fig. 2 is an enlarged longitudinal sectional view on the line 2-2 of Fig. 3.; Fig. 3 is a plan view thereof; Fig. 4 is a detail sectional view on the line 4-4 of Fig. 3 of a conduit leading from the lower bellows chamber.

Referring to upper and lower stationary bellows boards secured at their front ends to a metallic head block 3, having a central member 4, which is pivotally attached to the front end of a central vibrating board 5, connected at its edges by leather 6 to the ed es of the stationary bellows boards 1, 2. aid upper and lower bellows boards are connected to a metallic frame 7 from which extend trunnion for the front wheels 8, and are also connected to metallic frames 9, from which extend shafts for the rear wheel 11. Secured to the lower bellows board and surrounding said wheels is a metal fender 12.

Extending from the rear corners of the vibrating bellows board 5 are lugs 13, which are pivoted to slotted arms 14 of a bell crank lever 16, ivoted on pins 17 extending from said meta lic frames 9, said bell crank lever extending over said upper stationary bellows board 1, and formed at its middle portion with a channel or groove 18. In said groove can reciprocate a crank pin 19, having a rounded head 21 slidable in the groove, and depending from and secured to a balance wheel 22, formed integral with a shaft 23, and secured by a collar 24 in a bearing 25, supported by a metal yoke 26, secured, as shown at 27, to the upper bellows board 1. Secured to the upper end of said shaft by a hol 28 therethrough is the lower end of a Specification of Letters Patent.

' carries a bevel the drawing, 1, 2 indicate.

PUMP FOR VAGUUMCLEANER$.

Patented Apr. 2, 1916. e, 1912. Serial No. 215,729.

flexible shaft 29, the upper end of which is connected to a rigid shaft 80, having its bearings in a tube 31, which tube has a pivoted yoke-like extension 32 which can be clamped at any point by means of a clamp ing nut 33 on a screw 34 extending through an arcuate slot 36 in an extension 37 of the yoke 26. The upper end of said rigid shaft 30 pmion 38 which meshes with a bevel gear 39 mounted upon an extension 41 of the tube, the shaft of said bevel gear carrying a crank arm 42 by which it Can be turned. Said extension 41 carries a handle 43 by which the whole apparatus can be propelled,

13y turning the crank arm 42 the shaft 23 can be rotated, thus causing the crank pin 19 to revolve about said shaft and producing an oscillatory motion of the bell crank lever 16, thereby also producing an oscillatory motion of the bellow board 5 to andfrom the bellows beards 1 and 2. alternately. Thereby dust-laden air i drawn from cham bers 44 past check valves 46, 47, the upper clack valve 46 being closed by a spring 48, and into chambers 49, 51, which are alternately suction and pressure chambers. The dust-laden air in said chambers, when the chambers are contracted, is expelled through valves 52 and 53 into conduits 54, 56, the lower chamber communicating with said valve by a conduit 57, shown in detail in Fig. 4, passing through the upper chamber. The conduits 54 and 56 lead to a central conduit 58, which is adapted to be connected with a dust bag, not shown.

The lower side of the metal frame 7 is concave, as shown at 59, to form a chamber for a rotary brush 61, the shaft 62 of said brush being secured to pulleys 63 around which pass belts 64 and 66, one of which is crossed, said belts also passing around pulleys 6 68 loose on extending hubs of the front wheels. Said pulleys 67, 68 carry pivoted dogs 69, which are pressed by springs 71 into engagement with the teeth of ratchet wheels 72 tight on said hubs 60. Said ratchet teeth and dogs point in opposite directions, so that, whether the appara tus is being propelled forward or backward, the shaft of the brush always rotates in the same direction. The brush chamber is closed at the ends by end plates 73, and the front ends of the fender 12 are secured, as shown at 74, to said end plates.

The chambers 44 communicate with a com mon conduit 7 6, which extends around said brush chamber to the front thereof and communicates with a cylindrical valve chamber in which is a hollow rotary valve 7 7 having a comparatively narrow longitudinal slot 78, and a wide longitudinal slot 79. The narrow slot 7 8 can register with the inner end of a conduit 81 in said metallic frame, the outer end of which is in close contact with the ground, and in that position the wide slot is in communication with the conduit 76. However, by means of a button 82, said valve can be turned so as to move the narrow slot 78 out of-registry with the conduit 81 and the wide slot 7 9 into registry both with the conduit 7 6 and with a conduit 83, leading from the brush chamber. In that case, the dust stirred up by the brush is drawn from said brush chamber through the valve 77 into the conduit 7 6 and thence into the belows.

Located centrally in the upper portion of the frame 7 is a short conduit 8& communicating with the conduit 76, to which can be connected a tube having at its end a nozzle for the vacuum cleaning of articles above the floor.

We claim 2- 1. The combination of stationary bellows boards, an intermediate bellows board reciprocating between the stationary bellows Copies of this patent may be obtained for five cents each, by addressing the boards, a balance wheel mounted stationarily with reference to the stationary bellows boards, a crank pin depending therefrom and having a rounded head, a bell crank lever having a groove in which said head can reciprocate, said bell crank lever being operatively connected with said movable bel-v lows board, conduits leading to said stationary bellows boards respectively, valves for controlling the passage of air through said stationary bellows boards, and fixed conduits leading therefrom.

2. The combination of upper and lower stationary bellows boards, an intermediate bellows board reciprocating between the stationary bellows boards, a yoke secured upon the upper stationary bellows board and having a bearing, a balance wheel having a shaft rotatable in said bearing, a crank pin depending from said balance wheel and having a rounded head, a yoke-shaped bell crank lever extending between said upper stationary bellows board and the balance wheel the central portion of the yoke having a groove receiving said rounded head, the ends of the arms of the yoke-shaped bell crank lever being operatively connected to the intermediate bellows board.

HORACE H. TAYLOR. LEONARD A; MOBEBRY.

Commissioner of Patents,

Washington, I). G. 

